Al Gore: Fermat's Last Theorem

So this weekend I was reading Diophantus by Pierre de Fermat, when I stumbled on a comment that he had found a truly marvelous math proof which the margin was too small to contain. I spent this weekend, solving it, but now, I can proudly say that I've solved Fermat's Last Theorem:

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      Let  X = 0.99. So 10X = 9.99.
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      From this I derive that 10X - X = 9X = 9.99 - 0.99 = 9
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      Thus, 9X = 9, and finally, that X = 1, not 0.99!  

Previous proofs were very indirect, dealing with the Taniyama-Shimura conjecture. I decided however to tackled the problem head-on.